Precision Twist Drill 5999260 Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5999260 is a screw machine length drill bit designed for high-performance drilling in a range of industrial and trade applications. Built from high speed steel (HSS) with a bright, uncoated finish, it has a 0.07-inch diameter and a 118-degree standard point angle. The straight-cylindrical shank seats securely in standard drill chucks, and the right-hand spiral flute geometry promotes efficient chip evacuation. Web-thinned construction reduces thrust force at the tip, making it well suited for precision work on tight-tolerance holes. This bit is sized to Wire Gauge #50 and meets ANSI standards.

This drill bit is intended for use in screw machine operations, production drilling, and general-purpose metalworking where a compact, stub-length bit is preferred. The shorter body length improves rigidity and reduces deflection in close-clearance setups. The listed primary workpiece material is titanium, making it appropriate for aerospace, medical, and precision manufacturing environments where hard-material drilling is routine. Machinists, tool-and-die makers, and trade professionals working with high-hardness alloys will find this bit consistent with demanding production requirements.

Key Features

• High speed steel construction for durability across general-purpose and high-performance drilling
• 118-degree standard point angle with web-thinned, tapered web for reduced entry force
• Screw machine (stub) length at 1-11/16 inches overall for improved rigidity and reduced deflection
• 11/16-inch spiral flute length with 2.5xD flute-to-diameter ratio for efficient chip clearance
• Right-hand cut with straight-cylindrical shank — compatible with standard drill chucks and collets
• Bright, uncoated finish; ANSI-compliant; Series R41

Compatibility

Designed as an OEM-style screw machine length drill bit for use in standard drill chucks and collets accepting a straight-cylindrical shank at 0.07-inch (Wire Gauge #50) diameter.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with drill press, CNC, or hand-held drilling equipment. Ensure the workpiece is securely clamped and the spindle is at the correct RPM for the workpiece material before engaging the bit. Inspect the cutting tip and flutes for wear or damage before each use. Follow all applicable shop safety protocols and equipment manufacturer guidelines when operating drilling machinery.